Released Sep 21, 2026 $0.99 Very Positive Not counted on Steam profiles yet

Big Sister

By HaHaHaGame

Casual Idler 2D Cute Cozy Female Protagonist Indie Singleplayer

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Followers —

Reviews 50 Very Positive

Players now 1 Peak today 1

Followers, 30 days — Not enough history yet

Big Sister is a game tagged Casual, Idler and 2D by HaHaHaGame, released Sep 21, 2026. It has 50 Steam reviews (Very Positive). The Steam games most like it include Little Sister, Musical Slime and your girl.

A desktop pet game with a companion who blinks, breathes, and follows your cursor. Drag, resize, pin, lock or hide her, and pair her with static, GIF or MP4 wallpapers. Discover and share characters and wallpapers through Steam Workshop for company while you work, study or relax.

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<a href="https://launchrivals.com/games/5206420-big-sister"><img src="https://launchrivals.com/games/5206420/badge.png" alt="Big Sister launch date" width="320" height="84"></a>

<a href="https://launchrivals.com/games/5206420-big-sister"><img src="https://launchrivals.com/games/5206420/badge.png?theme=light" alt="Big Sister launch date" width="320" height="84"></a>

Little Sister 100% match · Casual, Idler, 2D
Musical Slime 91% match · Casual, Idler, 2D
your girl 88% match · Casual, 2D, Cute
迷你种田 87% match · Casual, Idler, 2D
=^.ω.^= 86% match · Casual, Idler, 2D
ShapeBlast 85% match · Casual, Idler, 2D
Lazy Lord: War on the Desktop 84% match · Casual, Idler, 2D
TinyPaws 84% match · Casual, Idler, Cute
CODIT 84% match · Casual, Idler, Cute
Achievement Clicker 84% match · Casual, Idler, 2D

Steam data

Everything Steam lists for Big Sister · record updated 1 day ago

Steam store

Overview

App ID5206420

Release dateSep 21, 2026

Last change number39117244

Last record update1 day ago

App type: Game
Developer: HaHaHaGame
Publisher: HaHaHaGame
Steam profile: Not counted yet: Steam is still getting to know this game, so it doesn't add to game counts or achievement totals · checked 16 hours ago
Technologies: Godot detected

Windows

Single-playerSteam AchievementsSteam CloudSteam WorkshopFamily Sharing

Prices

Price · US$0.99

On sale0 of 41regions right now

Lowest seen · US$0.99Oct 23, 2026

Checked17 hours agoin 41 regions

Thailand฿THB

Every price change is kept from Oct 23, 2026 on. Pick a region below to compare.

Patches

Build	Branch	Updated
25474784	public	Sep 23, 2026

Depots

ID	Name	Systems	Size	Download	Manifest
5206421	—	All	140.4 MB	60.2 MB	7930723770622986886

Branch	Build	Updated	Access
public	25474784	Sep 23, 2026	Open

Configuration

Install foldersteamapps/common/Big Sister

Executable	Arguments	Systems	Description
BigSister.exe		Windows

Space per player953.7 MB

Filesup to 1,000

Save locations1

Root	Path	Pattern	Systems
WinAppDataRoaming	Godot/app_userdata/姐姐/cloud/{64BitSteamID}	preferences.cfg	Windows

Achievements

Achievements100 hidden

Most unlocked50.3%First Hello

Rarest49.2%Treasured Memories

First Hello A little hello, and a new beginning together. 50.3%
A Little Kindness A little ribbon, tied with kindness. 50.3%
Quiet Moments A quiet moment shared without a word. 49.8%
Gentle Blossom A gentle blossom for an ordinary day. 49.6%
A Place Beside You There is always a place here for you. 49.6%
Little Surprise A little surprise, just because. 49.6%
Warm Company A warm little light to keep you company. 49.6%
Starlit Company A little star to brighten a quiet night. 49.6%
Always by Your Side May this company bring a little warmth to every day. 49.6%
Treasured Memories Keep the little lovely moments close. 49.2%